Diagnostic Aids
The harness connector of each power window regulator contains a separate voltage circuit that is used exclusively for power window motor operation. These individual circuits are fed by the Power Window Motors Circuit Breaker located in the right rear fuse block. If the circuit opens at a point where the separate branches are all connected into one, all power windows will be inoperative. A short to ground anywhere in the circuit will open the Power Window Motors Circuit Breaker and cause all power windows to be inoperative. These circuits must not be confused with the voltage circuits that feed the individual door modules.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Moveable Window Schematics and Door Control Module Schematics Connector End View Reference: Vehicle Access Connector End Views DEFINITION: All power windows simultaneously fail to operate. | |||
1 | Have you conducted diagnostic system check- vehicle? | Go to Step 2 | |
2 |
Does any window operate? | Go to Symptoms - Doors | Go to Step 3 |
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 10 |
4 | Connect the test lamp between the 2 fuse block terminals of the Power Window Motors Circuit Breaker. Does the test lamp illuminate? | Go to Step 6 | Go to Step 5 |
5 | Operate any one of the power window switches while observing the test lamp. Does the test lamp illuminate? | Go to Step 14 | Go to Step 7 |
6 | Disconnect each window regulator, one at a time, while observing the test lamp. Does the test lamp go out after any window regulator is disconnected? | Go to Step 8 | Go to Step 11 |
7 | Locate and repair an open or high resistance in the voltage circuit between the splice and the right rear fuse block. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 15 | Go to Step 9 |
8 | Inspect for poor connections at the harness connector of the suspect window regulator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 15 | Go to Step 12 |
9 | Inspect for poor connections at the harness connector of the right rear fuse block. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 15 | Go to Step 13 |
10 | Locate and repair an open in the battery voltage supply circuit of the Power Window Motors Circuit Breaker. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 15 | -- |
11 | Locate and repair a short to ground in the voltage circuit between the right rear fuse block and each window regulator. Refer to Circuit Testing and Wiring Repairs Did you complete the repair? | Go to Step 15 | -- |
12 | Replace the suspect window regulator that is internally shorted to ground. Refer to Front Side Door Window Regulator Replacement for front windows and Rear Side Door Window Regulator Replacement for rear windows. Did you complete the replacement? | Go to Step 15 | -- |
13 | Replace the right rear fuse block assembly. Did you complete the replacement? | Go to Step 15 | -- |
14 | Replace the Power Window Motors Circuit Breaker. Did you complete the replacement? | Go to Step 15 | -- |
15 |
Did you correct the condition? | System OK | Go to Step 2 |
